Metal-punching machine



I. vD. MORGAN.

METAL PUNCHING MACHINE.

APPLICATION FILED MAY 26, I9I9.

Patented Aug. 17, 1920.

l/I/ VEN TOR UNITED STATES PATENT OFFICE.

JOHN D. MORGAN, OF SUMMIT, NEW JERSEY, ASSIGNOR TO STEEL UTILITIES, A CORPORATION OF NEW YORK.

METAL-PUNCHING MACHINE.

Application filed May 26,

. specification. VMy invention relates to machines for punching metal sheets, plates, beams and the like,rwherein` the work is successively progressed, stopped and positioned relatively tol punching. mechanism, or other tool-equipped means to be punched or operated upon thereby at predetermined positions or locations.

OneY object of the present invention is to keep the plate, sheet, beam,or like work inf exact lposition with relation to a part trav cling in definite `relation with, and under the control of, a distance determining or regulating device, and `more especially-t0 provide mechanism o f the kind indicated which coperates with an automatically operating,fdistance determining vor regulating device. Other objects and advantages of the'invention will be setV forth hereinafter,

vor will be obvious herefrom, or may be learned from' practice with the invention, the same'being realized or secured through the means, instrumentalities and Acombinations pointed out inthe appended claims.

The invention consists in theA novel parts, constructions, arrangements, combinations and improvements herein Yshown and described.

The accompanying drawings herein referred to and constituting a part hereof, illustrate one embodiment of the invention, and together-with the description serve to explain the principles thereof.

Ofl the drawings ,e

Figure 1 is a fragmentary top plan of a mechanism constructed in accordance with the principles of the invention, showing the magnetic head 1n section;l v

Fig.v 2 is a fragmentary side elevation,

[looking at Fig. 1 from the lower side thereof; g

Fig.-3 is a fragmentary elevation, look ing at Fig. 1 from theright; and

Fig. 4 is a fragmentary .section` of a somewhat dilerentforInof the head. Y Y

Specification of Letters Patent.

Patented Aug. 17, 1920.

1919. Serial N0. 300,008.

In the illustrated embodiment of the drawings the present invention is shown by way of example as applied to a metal punching machine substantially the same as that shown in U. S. Patent No. 1,241,258 of L. A. Hawthorne, dated Sept. 25, 1917, although it will be understood that the invention is applicable to other kinds of metal punching and like machines.

In the exemplified embodiment of the present drawings, certain parts of the machine illustrated and described in said S. Patent No. 1,241,258 are shown, to explain the application of the present invention to the machine' of said patent. Such parts of the patented machine are indicated by the same reference numerals as in said Patent No. 1,241,258, for the sake of convenience in description.

The work a is supported and progressed by rollers 1, journaled in a suitable supporting frame orvframes, and which may be driven in the manner shown and described in said prior patent. The coperating devices which arrest the traveling work relatively to the punches or other tool equipped means at the proper predetermined points,'A

to locate the operations at the desired places on the work, comprise a screw shaft 40 and the cooperating mechanisms which are rshown in said prior Patent No. 1,241,258, and which need not be described in detail herein. .It will be understood, however, that such mechanism may be operated under the control of a distance record sheet, as explained in said prior patent.

In coperation with the screw shaft 40 isa carriage or head 25 traveling along guides 15, which guides extend along the path of the work, the travel of thc carriage being controlled by the distance determining means as explained in the patent. The engaging member or latch 45 is carried by the head or carriage 25, and is timed to engage with the screw shaft 40 by thc distance determiningr mechanism, the shaft then rotating under the control of the distance determining mechanism, while the latch is engaged with the shaft to complete the distance reading, as fully explained in the patent. y

The reference numerals thus far employed correspond to thosel applied to the same or Ainto the path of the work a' asit travels corresponding parts in said Patent No. 1,241,258, to avoid prolixity in the present description. n ,Y

The head with which the work engages has a portion 50which extends'out transversely from the main portion of the head along the rolls 1. In accordance with the present invention, the work engaging portion of the head is an electro-magnet, the work being held thereto by magnetic attraction. In such embodied form, the head comprises a Contact bar 51 which is in exact position w-ith respect to the distance determining device. rIhe contact bar 51 is supported by a plurality of rods 52 which serveas cores for the windings 53of the electro-magnets. Rods 52 are accurately iittedinto a laterally extending plate, being preferably fitted thereinto by a beveled fit and held in place by nuts 54 screw-threaded on to the rods. The windings 53 are supported on the rods 52 as already described.

Suitable means are provided for 'supplying current to the windings as the head 25 travels along the guid'eways 15. F or thispurpose, as embodied, two trolley wires 55 and 56 are strung along the path of travel of the carriage, and two trolleys 57 Vand 58 are mounted upon the head or carriage'25 by insulated mountings 60 VandV 61,'respectively, and slide along the wiresy 55 and 56, respectively.V The trolleys have wires eX- tending therefrom, respectively, which are carried by a cable 62 to the magnet windings 53.

In Fig. 4 an embodiment of a special form of head or Contact bar is shown, which is adapted for use with sheets and plates of metal. On the face of the .Contact bar 51 are provided supports, such as' apertured Y outer or front edge of the plate 67 is upwardly curved to permit a fed-in plate a to slide thereunder and the supporting rods v6 6 may have Yhea-ds 68 to limit the downward movement of plate 67. Y

Means are provided for cutting Volf the Lelectric current from the magnets whereby the work may be more readily separated therefrom at the completion of thepunchvings or other operations upon the work.

v As embodied, a switch 69 isshown inthe trolley circuits for this purpose.

VBy the present'invention, the workis kept securely toposition againstthenhead, which is especially desirable with relativelyY light work such as many kinds Vof sheets i or plates. It is also especially useful where the work may be drawn longitudinally or transversely by the head to position it rela Y Y be made inthe lparticular mechanism shown and described, without departing from the principles of the invention, andV without4 sacrificing its chief objects and advantages.

Vhat V.claim is 1. In a machine for operating upon metal plates or beams, a carriage travelingfunder' control of a distance determining device, a head fixed to saidcarriage and in engagement with' the work, means impelling the work against said head and means for magnetizing said head to prevent rebound or displacement of the work relatively to the head. Y i Y 2. Ina machine for operating upon metal plates or beams, a carriage traveling under control 'of 'ai distance determining' device, a magnetic head Xed to said carriage and'in engagement with the work, 'and means'impelling the work against said head. f

3. In a machine for operating upon Vmetal plates or beams, a carriage travelingunder control of a distance determiningd'evice, a head fixed to said carriage'and in engagement with the work, magnet windings on said head, trolleys on said carriage, and trolleywires therefor'extending along the path of travel of the carriage, and meansV impellinglthe work against said head. Y

4. In a machine for operating upon metal plates or beams,- a carriagetraveling under control of a distance determining device,` a magnetic head fixed to said carriage and in engagement with the work and `vmeans for demagnetizing said head, vand means im-V pelling the work against said head.

5. In a machine for operating'upon Vmetal plates or beams, a carriage traveling under control of a distance determining device, a head fixed to saidl carriage and in engagement with the work, and meansfor magnetizing and demagnetizing said head, and means impelling the work against said head.

6. In a machine foroperating VuponmetalV plates or beams,a carriage traveling `under control of'a Vdistance determining device, a magnetic head fixed to said carriage andin engagement with the work, said'head hav- I engagement with the work, said head having means? for engaging the frontend and the adjacent side of 4a plate to be operated upon by the machine. Y

8. In a machine for operating upon metal plates or beams, a carriage traveling under control of a distance determining device, a head fixed to said carriage and in engagement with the work, means for impelling the Work against said head, magnet windings on said head, trolleys on said carriage, and trolley Wires therefor extending along the path of travel of the carriage, and means for cutting off the current from the trolley wires to demagnetize the head.

9. In a machine for operating upon metal plates or beams, a carriage traveling under the control of a distance determining device, a magnetic head iXed to said carriage and shaped to abut on the front end and also on the adjacent horizontally disposed side of a beam or plate.

10. In a machine for operating upon metal plates or beams, a carriage traveling under the control of a distance determining device, a magnetic head ixed to said carriage and shaped to abut on the front end and also on the adjacent horizontally disposed side of a beam or plate, and means impelling the Work against the head to engage at its end and side With the head.

ll. In a machine for operating upon metal plates or beams, a carriage traveling under the control of a distance determining device, a magnetic head lixed to said carriage and shaped to abut on the front end "and also on the adjacent horizontally disposed side of a beam or plate, and means impelling the Work against the head to engage at its end and side with the head, and spring means for holding the Work in contact With the head.

12. In a machine for operating upon metal plates or beams, a carriage traveling under the control of a distance determining device, a magnetic head fixed to said car riage and shaped to abut on the front end and also on the adjacent horizontally disposed side of a beam or plate, and means impelling the Work against the head to engage at its end and side With the head, and spring means for automatically receiving the Work and for holding the Work in contact with the head.

y In testimony whereof I have signed my name to the specification.

JOHN D. MORGAN. 

